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Registered
Join Date: Mar 1999
Location: Vancouver,Wa.
Posts: 4,457
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Race gas tuning
I'm new to race gas.
I took the car with it's freshly rebuilt motor to a chassis dyno for some break in. It ran pretty strong for right out of the box. I was conservative with timing....25-28 deg total and it was blowing black smoke. Did a few pulls after 30-40 minutes of run time. The sheet below shows AF ratio curve on the bottom line......the printing is kinda small. I'm running 135 mains but have a set of 130s that I'm thinkin' about swapping in. Is that too much of a jump? The other pulls show a richer AF ratio 11.9-13.0 .... 
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JPIII Early Boxster Last edited by J P Stein; 04-06-2008 at 07:11 AM.. |
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04-06-2008, 07:09 AM
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Registered
Join Date: Mar 1999
Location: Vancouver,Wa.
Posts: 4,457
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Lotta lookers but no help.
Is the AF ratio OK? I know the graph is hard to see, but that's what I got.
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JPIII Early Boxster |
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04-09-2008, 09:36 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Hi JP,
I really cannot tell you anything definitive due to lack of resolution on that print-out. When we dydno a motor, the software is configured to print both a decending chart in 200 RPM increments as well as print a graph with the same resolution so one can clearly see the AFR's at all RPM points. They simply need to reconfigure their Mustang computer's software as I know it will do just that,...  Once thats done, they should be able to print that again with improved resolution, assuming that they saved the data.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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04-09-2008, 09:46 AM
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